Hi, I have been running pio-bench and b_eff_io on top of a single node pvfs2-1.4.0 (one node assume the role of both pvfs2-server and pvfs2-client).
However, both benchmarks failed to run smoothly. 1) b_eff_io Specifically, for b_eff_io, it always hangs after 20-30 minutes of execution, at the same time I got a lot of repetitive errors like the follows: # mpiexec -np 2 ./b_eff_io -MB 128 -MT 1024 -p $MNT_PVFS2 [0] ERROR in deleting before opening: n=1, p=0, filename=/pvfs2/mnt_pvfs2/b_eff_io_data_i00_001_0, ierr_open=-524286, ierr_close=202429708 [0] ERROR in File_open: n=1, p=0, filename=/pvfs2/mnt_pvfs2/b_eff_io_data_i00_001_0, ierr=-524286 [0] ERROR in File_set_view: n=1, p=0, ierr=204002572 [0] ERROR in File_read/write: n=1, p=0, ierr=204526860 [0] ERROR in File_set_view: n=1, p=1, ierr=205575436 [0] ERROR in File_read/write: n=1, p=1, ierr=206099724 [0] ERROR in File_set_view: n=1, p=2, ierr=209769740 In addition, sometimes I found that my hard drive ran out of space when b_eff_io hangs (before running b_eff_io, the free space is more than 8GB). 2) pio-bench For pio-bench, things became more interesting: In pio-bench test suites, there are many access patterns to be tested, including "Nested Strided", "Sequential", "Random Stride", "Segmented", "Simple Strided", "Tiled IO", "Flash-io", and "Unstructured Mesh". Most of the times I got errors as follows: #mpiexec -np 2 ./pio-bench File under test: /pvfs2/mnt_pvfs2/l_fc_c_9.0.031.tar Number of Processes: 2 Sync: off Averaging: Off Now testing: Simple Strided (re-read) hints total time(s) MB/s buffer size total bytes cannot create file without MPI_MODE_CREATE cannot create file without MPI_MODE_CREATE cannot create file without MPI_MODE_CREATE file pio-bench.c, line 865: Error opening file on process 0, aborting. repetition 0 of test 0 file pio-bench.c, line 378: MPI_File_open: Undefined dynamic error code cannot create file without MPI_MODE_CREATE file pio-bench.c, line 865: Error opening file on process 1, aborting. repetition 0 of test 0 file pio-bench.c, line 378: MPI_File_open: Undefined dynamic error code However, "Flash-io" test always finish without complains. The results is shown as follows. # mpiexec -np 2 ./pio-bench File under test: /pvfs2/mnt_pvfs2/l_fc_c_9.0.031.tar Number of Processes: 2 Sync: off Averaging: Off Now testing: Flash-io (write) hints total time(s) MB/s buffer size total bytes 2 0.1966 15.2570 1572864 3145728 Any thoughts or clue will be appreciated! Peng _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
